Shelly Pro 3 - Three-Channel Relay

Overview:

Shelly Pro 3 is a DIN rail mountable 3-channel smart switch with potential-free contacts, capable of switching 3 completely independent circuits, including 3-phase ones. Enhanced with all the gen2 firmware flexibility and LAN connectivity, it provides professional integrators with many more options for end customer solutions. It can work standalone in a local Wi-Fi network or it can also be operated through cloud home automation services.
Shelly Pro 3 can be accessed, controlled and monitored remotely from any place where the User has internet connectivity, as long as the device is connected to a Wi-Fi router and the Internet.
Shelly Pro 3 has an embedded Web Interface which can be used to monitor and control the device, as well as adjust its settings.

Features:

• LAN, Wi-Fi, and Bluetooth connection
• 3 outputs, 16A each. Total device maximum of 48A
• Dry contacts
• Overpower and overvoltage protection of the load.
• Easy control through the Shelly app, various protocols, and platforms, as well as voice assistants
• Supports control of 3 different phases
• Supports KNXnet / IP communication

Main Applications

• Residential
• MDU (Multi Dwelling Units - apartments, condominiums, hotels, etc.)
• Light commercial (small office buildings, small retail/restaurant/gas station, etc.)
• Government/municipal
• University/college

Simplified internal Schematics:

Basic Wiring Diagrams:

Resistive Load

Inductive Load and RC Snubber

Device electrical interfaces:

Inputs:

• 3 switch/button inputs on screw terminals: S1, S2 and S3
• 2 power supply inputs on screw terminals: 1 N and 1 L
• 3 relay inputs: I1, I2 and I3

Outputs:

• 3 relay outputs: O1, O2 and O3

Ethernet port:

• 1 RJ45 connector
⚠CAUTION! Plug in or unplug the LAN cable only when the Device is powered off! The LAN cable connector must not be metallic in the parts touched by the user to plug in or unplug the cable.

Connectivity:

• Wi-Fi
• Bluetooth
• Ethernet

Safety function:

• Overheating protection

Supported load types:

• Resistive (incandescent bulbs, heating devices)
• Capacitive (capacitor banks, electronic equipment, motor start capacitors)
• Inductive with RC Snubber (LED light drivers, transformers, fans, refrigerators, air-conditioners)

User interfaces:

Inputs:

• One tactile dome button
• Press and hold for 5 seconds to reboot.
• Press and hold for 10 seconds to factory reset the Device.

Outputs:

• LED indication
• Power (red): Red light indicator will be on if power supply is connected.
• Wi-Fi (varies):
• Blue light indicator will be on if in AP mode.
• Red light indicator will be on if in STA mode, and not connected to a Wi-Fi network.
• Yellow light indicator will be on if in STA mode, and connected to a Wi-Fi network. Not connected to Shelly Cloud or Shelly Cloud disabled.
• Green light indicator will be on if in STA mode, and connected to a Wi-Fi network and the Shelly Cloud.
• The light indicator will be flashing Red/Blue if OTA update is in progress.
• LAN (green): Green light indicator will be on if LAN is connected.
• Out 1 (red): Red light indicator will be on if the Output 1 relay is closed.
• Out 2 (red): Red light indicator will be on if the Output 2 relay is closed.
• Out 3 (red): Red light indicator will be on if the Output 3 relay is closed.

Specification:

Physical:

• Size (HxWxD): 96x53x59 mm
• Weight:
• Mounting: Din Rail
• Screw Terminals Max Torque: 0.4Nm
• Conductor Cross Section: 0.5 to 2.5 mm² / 24 to 14 AWG (solid, stranded and bootlace ferrules)
• Conductor Striped length: 6 to 7 mm
• Shell material: Plastic
• Colour: Black

Environmental:

• Ambient temperature: -20 °C to 40 °C
• Humidity: 30 % to 70 % RH
• Max. Altitude: 2000m

Electrical:

• Power supply voltage AC: 110 - 240 v 50Hz
• Power supply voltage DC: N/A
• Power Consumption: < 3W
• Neutral not needed: No

Output circuits ratings:

• Max. switching voltage AC: 240 V
• Max. switching voltage DC: 30 V
• Max. switching current AC: 16A per channel, 48 A Total
• Max. switching current DC: 16A per channel, 48 A Total
• Power measurement: Yes
• Voltage protection / Cutoff: Yes
• Current protection / Cutoff: Yes
• Max power protection / Cutoff: Yes

Sensors, meters*:

• Internal-temperature sensor: Yes

Radio:

• Wi-Fi
• RF band: 2401 - 2495 MHz
• Max. RF power: < 20 dbm
• Wi-Fi Protocol: 802.11 b/g/n
• Wi-Fi Range: upto 30m indoors adnd 50m outdoors (Depends on local conditions)
• Bluetooth
• Bluetooth Protocol: 4.2
• RF band: 2400 - 2483.5 MHz
• Max RF Power: < 4 dbm
• Bluetooth Range: Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (Depends on local conditions)

MCU:

• CPU: ESP32-D0WDQ6
• Flash: 8 MB

Firmware Capabilities:

• Webhooks (URL actions): 20 with 5 URLs per hook
• Schedules: 20
• Scripting: Yes
• MQTT: Yes
• CoAP: No

Resources:

• Components and APIs - This device
• Components and APIs - All Shelly devices and services
• Compliance
• Installation guide

Package includes:

• 1 X Shelly Pro 3 - Three-Channel Relay